Synthesis of 2-CRF Section Filter without External Elements

This paper presents the synthesis and circuit transformation for fourth-order filters based on two CRF sections. The synthesized network selects the input and output electro-acoustic couplings and defines the position of the four eigen modes excited in the topology. These values can be related with...

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Bibliographic Details
Published in2021 IEEE MTT-S International Microwave Filter Workshop (IMFW) pp. 106 - 108
Main Authors Perea-Robles, Rafael, Mateu, Jordi, Collado, Carlos, Karnati, Kalyan K., Gimenez, Alfred, Yusuf, Yazid
Format Conference Proceeding
LanguageEnglish
Published IEEE 17.11.2021
Subjects
Conferences
Couplings
CRF
electroacoustic
filters
Microwave circuits
Microwave filters
Microwave theory and techniques
Network topology
synthesis
Topology
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Summary:This paper presents the synthesis and circuit transformation for fourth-order filters based on two CRF sections. The synthesized network selects the input and output electro-acoustic couplings and defines the position of the four eigen modes excited in the topology. These values can be related with the physical dimensions of the structure. This is the area and layer configuration and thicknesses. The synthesis method reveals the existence of multiple solutions for a given filter response, which give rise to a different degree of miniaturization. Final simulated illustrative designs will be outlined to verify the synthesis method.
DOI:10.1109/IMFW49589.2021.9642304